
<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name" />
      </el-form-item>

      <el-form-item label="讲师排序">
        <el-input-number
          v-model="teacher.sort"
        />
      </el-form-item>

      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <!--

            数据类型一定要和取出的json中的一致，否则没法回填

        因此，这里value使用动态绑定的值，保证其数据类型是number

          -->

          <el-option :value="1" label="高级讲师" />

          <el-option :value="2" label="首席讲师" />
        </el-select>
      </el-form-item>

      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career" />
      </el-form-item>

      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea" />
      </el-form-item>

      <!-- 讲师头像：TODO -->
      <el-form-item label="讲师头像">
        <!-- 头像缩略图 -->
        <pan-thumb :image="teacher.avatar"/>
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像</el-button>
        <!-- 
          v-show：是否显示上传组件
          :key：类似于id，如果一个页面多个图片上传控件，可以做区分
          :url：后台上传的url地址
          @close：关闭上传组件
          @crop-upload-success：上传成功后的回调
         -->
        <image-cropper 
          v-show="imagecropperShow" 
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="this.BASE_API+'/eduoss/fileoss'"
          field="file"
          @close="close"
          @crop-upload-success="cropSuccess"/>
      </el-form-item>


      <el-form-item>
        <el-button
          :disabled="saveBtnDisabled"
          type="primary"
          @click="saveOrUpdate"
          >保存</el-button
        >
      </el-form-item>
    </el-form>
  </div>
</template>


<script>

import teacherApi from '@/api/edu/teacher'
import ImageCropper from '@/components/ImageCropper'
import PanThumb from '@/components/PanThumb'

export default {
  components: {ImageCropper, PanThumb},
  data() {
    return {
      teacher: {
        name: "",
        sort: 0,
        level: 1,
        career: "",
        intro: "",
        avatar: "",
      },
      saveBtnDisabled: false, // 保存按钮是否禁用,
      imagecropperShow: false, // 上传弹窗组件是否显示
      imagecropperKey: 0, // 上传组件key值
      BASE_API: process.env.VUE_APP_BASE_API // 获取.env.development里面的地址
    };
  },

  methods: {
    // 关闭上传弹框
    close() {
      this.imagecropperShow = false
      this.imagecropperKey = this.imagecropperKey + 1
    },
    // 上传成功的方法
    cropSuccess(data) {
      this.imagecropperShow = false
      // 上传后接口返回图片地址
      this.teacher.avatar = data.url
      this.imagecropperKey = this.imagecropperKey + 1
      // console.log(data.url)
      // console.log(this.teacher.avatar)
    },
    saveOrUpdate() {
      this.saveBtnDisabled = true;
      this.saveData();
    },

    // 保存
    saveData() {
        teacherApi.addTeacher(this.teacher)
            .then(res => {
                this.$notify({
                    type: 'success',
                    message: '添加成功',
                    showClose: false
                })
                this.$router.push({path:'/teacher/table'})
            })
    },
  },
};
</script>